Stady of the characteristics of barrier flat ozonizer with the use of pulse supply
The characteristics of the barrier reactors of flat ozonators with the use of pulsed power supply have been investigated. The experimental data on the total, active and reactive powers were taken as well as the ozone yielding rate for reactors with various dielectrics used dependent on the air flow...
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| Zitieren: | Stady of the characteristics of barrier flat ozonizer with the use of pulse supply / V.V. Krasnyj, A.V. Klosovskij, A.S. Knysh, V.S. Taran, O.M. Shvets // Вопросы атомной науки и техники. — 2005. — № 2. — С. 214-216. — Бібліогр.: 3 назв. — англ. |
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nasplib_isofts_kiev_ua-123456789-798142025-02-09T14:50:45Z Stady of the characteristics of barrier flat ozonizer with the use of pulse supply Дослідження характеристик плоского бар'єрного озонатора з імпульсним живленням Исследование характеристик плоского барьерного озонатора с импульсным питанием Krasnyj, V.V. Klosovskij, A.V. Knysh, A.S. Taran, V.S. Shvets, O.M. Low temperature plasma and plasma technologies The characteristics of the barrier reactors of flat ozonators with the use of pulsed power supply have been investigated. The experimental data on the total, active and reactive powers were taken as well as the ozone yielding rate for reactors with various dielectrics used dependent on the air flow rate at different high-voltage pulse repetition rate was calculated. Проведено дослідження характеристик озонатора на основі бар'єрного розряду з плоскими електродами й імпульсним живленням. Отримано експериментальні дані про співвідношення повної, активної і реактивної потужностей у бар'єрному реакторі, а також вихідної концентрації озону і продуктивності в залежності від швидкості течії повітря і частоти повторення високовольтних імпульсів живлення. Проведены исследования характеристик озонатора на основе барьерного разряда с плоскими электродами и импульсным питанием. Получены экспериментальные данные о соотношениях полной, активной и реактивной мощностях в барьерном реакторе, а также выходной концентрации озона и производительности в зависимости от скорости протока воздуха и частоты повторения высоковольтных импульсов питания. 2005 Article Stady of the characteristics of barrier flat ozonizer with the use of pulse supply / V.V. Krasnyj, A.V. Klosovskij, A.S. Knysh, V.S. Taran, O.M. Shvets // Вопросы атомной науки и техники. — 2005. — № 2. — С. 214-216. — Бібліогр.: 3 назв. — англ. 1562-6016 PACS: 52.80.Hc https://nasplib.isofts.kiev.ua/handle/123456789/79814 en Вопросы атомной науки и техники application/pdf Національний науковий центр «Харківський фізико-технічний інститут» НАН України |
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Low temperature plasma and plasma technologies Low temperature plasma and plasma technologies |
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Low temperature plasma and plasma technologies Low temperature plasma and plasma technologies Krasnyj, V.V. Klosovskij, A.V. Knysh, A.S. Taran, V.S. Shvets, O.M. Stady of the characteristics of barrier flat ozonizer with the use of pulse supply Вопросы атомной науки и техники |
| description |
The characteristics of the barrier reactors of flat ozonators with the use of pulsed power supply have been investigated. The experimental data on the total, active and reactive powers were taken as well as the ozone yielding rate for reactors with various dielectrics used dependent on the air flow rate at different high-voltage pulse repetition rate was calculated. |
| format |
Article |
| author |
Krasnyj, V.V. Klosovskij, A.V. Knysh, A.S. Taran, V.S. Shvets, O.M. |
| author_facet |
Krasnyj, V.V. Klosovskij, A.V. Knysh, A.S. Taran, V.S. Shvets, O.M. |
| author_sort |
Krasnyj, V.V. |
| title |
Stady of the characteristics of barrier flat ozonizer with the use of pulse supply |
| title_short |
Stady of the characteristics of barrier flat ozonizer with the use of pulse supply |
| title_full |
Stady of the characteristics of barrier flat ozonizer with the use of pulse supply |
| title_fullStr |
Stady of the characteristics of barrier flat ozonizer with the use of pulse supply |
| title_full_unstemmed |
Stady of the characteristics of barrier flat ozonizer with the use of pulse supply |
| title_sort |
stady of the characteristics of barrier flat ozonizer with the use of pulse supply |
| publisher |
Національний науковий центр «Харківський фізико-технічний інститут» НАН України |
| publishDate |
2005 |
| topic_facet |
Low temperature plasma and plasma technologies |
| url |
https://nasplib.isofts.kiev.ua/handle/123456789/79814 |
| citation_txt |
Stady of the characteristics of barrier flat ozonizer with the use of pulse supply / V.V. Krasnyj, A.V. Klosovskij, A.S. Knysh, V.S. Taran, O.M. Shvets // Вопросы атомной науки и техники. — 2005. — № 2. — С. 214-216. — Бібліогр.: 3 назв. — англ. |
| series |
Вопросы атомной науки и техники |
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2025-11-27T01:19:11Z |
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2025-11-27T01:19:11Z |
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1849904442625753088 |
| fulltext |
STADY OF THE CHARACTERISTICS OF BARRIER FLAT OZONIZER
WITH THE USE OF PULSE SUPPLY
V.V. Krasnyj, A.V. Klosovskij, A.S. Knysh, V.S. Taran, O.M. Shvets
Institute of Plasma Physics of the NSC KIPT, Kharkov,Ukraine, e-mail: vtaran@ ipp.kharkov.ua
The characteristics of the barrier reactors of flat ozonators with the use of pulsed power supply have been
investigated. The experimental data on the total, active and reactive powers were taken as well as the ozone yielding
rate for reactors with various dielectrics used dependent on the air flow rate at different high-voltage pulse repetition
rate was calculated.
PACS: 52.80.Hc
1.INTRODUCTION
At present time the utilization of discharge at
atmospheric pressure with dielectric barrier attracts
considerable attention. It is utilized for ozone generation,
cleaning of different tools, application of coatings as well
as for modification of various surfaces. As for ozone
generation techniques a number of experiments are being
carried out using various discharges and power supplies.
The main characteristics of discharges were investigated
with the purpose to obtain the optimum ozone
concentration and its yielding rate dependent on the air
flow rate and pulse repetition period of the applied
voltage. Up to now, the authors have emphasized on
experiments based on low power generators to produce
ozonators [1,2]. At present research we have investigated
a reactor module operated at 400 W for the following
production of ozonator.
2.EXPERIMENTAL
The scheme of the glow barrier discharge under
atmospheric pressure is shown in Fig.1. Dry air served as
a working gas. The discharge was generated between two
water-cooled flat electrodes (180 Ч 100 mm). Both
electrodes were coated with dielectric material. Two types
of dielectrics were used: the glass plates 2 mm thick with
dielectric coefficient equal to 7 and glass-enamel - 0,2mm
thick with the same dielectric coefficient. One of the
electrodes was grounded whereas the high-voltage pulses
with regulated on-off time ratio were applied to another
electrode. The resulting current flowing through the
discharge was measured by changing the voltage on (R1)
resistor. The shift current was determined by measuring
the current flowing through a known capacitor in the
discharge circuit.
Fig.1. Measuring circuit of effective current in the barrier
discharge
The efficiency of the active current through the discharge
gap was obtained by subtracting the shift current from the
line current with the help of operational amplifier. From
the amplifier outlet the dedicated HF-signal of the active
current was yielded on a thermo element where it was
converted in a voltage proportional to the current.
The amplified signal was measured using analog-digital
converter via computer line. The measuring of the ozone-
yielding rate was carried out with the help of atomized
spectrometer described in [3]. The common view of the
reactor is shown in Fig.2.
Fig. 2. Module of ozone barrier reactor with the water
cooling
3. RESULTS
The active power (Pact) is one of the main characteristics,
which determines the intensity of ionization processes in the
discharge gap of the barrier reactor as well as the ozone
formation processes. Fig. 3 depict the shapes of high-voltage
pulses applied to the reactor and the active current in the
reactor. The obtained experimental data allowed determining
the active power in the reactor.
Fig. 3. Oscillogram of voltage (upper line) and effective
current in the barrier discharge
214 Problems of Atomic Science and Technology. Series: Plasma Physics (11). 2005. № 2. P. 214-216
The breakdown voltage in the discharge gap was
determined to be from 7 to 8 kV. The obtained
experimental data of the active power were compared
with the method of measuring of the total power applied
to the reactor. These data were identical. The electronic
measuring scheme allowed selecting HF-signal of the
active current at any shape of the applied voltage to the
discharge gap. Figs. 4, 5 show experimental data of the
total power, active power (1), reactive power and ozone
yielding rate for reactors with two dielectric types at fixed
air flow rates 1 – 3 l/min and with various repetition rates
of high-voltage signal.
Pact = I effectUeffect , (1)
Ueffect = 1
T ∫
0
tT
U2dt= t
T
U, (2)
where Т is the high-voltage pulse repetition rate, t – time
of the active current and U – discharge voltage.
The output ozone concentration increases with
increasing the active power. For each air flow rate exists
critical power and after this point the ozone concentration
tends to decrease. It is a result of ozone decomposition
due to gas heating in a discharge gap leading to the
following formation of nitric oxide. The plots also
demonstrate an increase of output ozone concentration
rate with decreasing the thickness of dielectric coating
when selecting optimal on-off time ratio of the applied
power pulses.
Fig.6. shows the reactors characteristics dependent on
the dry air flow rate. These data allowed to determine the
required power and flow rate taking into consideration the
ozone concentration and its yielding rate. When operating
with oxygen the ozone concentration rate was increased
by 3.5 - 4 times with identical energy consumption.
Taking into consideration the obtained experimental
data, one can conclude that in order to improve the
service characteristics of flat-barrier ozonators our main
concern is to reduce the thickness of dielectric coating
and to decrease the dielectric coefficient. The pulse
repetition rate of the applied voltage should also be
reduced. The optimal power for better ozone yielding rate
can be obtained by regulating the pulse repetition rate of
the supplying voltage. Numerous experiments are being
carried out using preionization processes in the barrier
discharge. In this case we deal with superposition of
several discharges types. Basing on this idea a new
reactor was developed in which two types of discharges
(surface + DBD) were utilized. Two methods were
proposed for surface discharge generation. In the first
case, thin metallic stripes were deposited onto the surface
of the electrode having a glass-enamel coating. In the
second case the mica thin film isolated these stripes. In
both cases the surface discharge was initiated at a voltage
of 2 kV.
This initiates a breakdown of the main gap at 6 kV
(with a direct barrier discharge 7 - 8 kV). It should be
noted that in order to get optimal ozone concentration the
distance between the electrodes of the surface discharge
should be chosen properly.
0
5
1 0
1 5
2 0
2 5
P
ow
er
[
W
]
Р
Р с
Р а
0
2
4
6
8
1 0
1 2
1 4
T = 1 .4 m s
O
zo
ne
c
on
ce
nt
ra
ti
on
[
m
g/
l]
С
0
1 0
2 0
3 0
4 0
5 0
T = 0 .8 m s
0
5
1 0
1 5
2 0
4 6 8 1 0 1 2 1 4
0
2 0
4 0
6 0
8 0
1 0 0
T = 0 .4 m s
V o lta g e k V ]
0
5
1 0
1 5
2 0
0
20
40
60
80
100 Р
Рс
Ра
0
4
8
12
16
20
Т=1.4ms
O
zo
ne
c
on
ce
nt
ra
tio
n
[m
g/
l] С
0
40
80
120
160
Т=0.8ms
Po
w
er
[
W
]
0
5
10
15
20
4 6 8 10 12 14
0
60
120
180
240
Т=0.4ms
Voltage [kV]
0
5
10
15
a b
Fig. 4. Dependences of the ozone concentration and
discharge power for ozonizers with ((a) – glass,
(b)-glass enamel) insulating plates as a function applying
voltage. Air flow 1 l / min. T-repetition period of the
pulses of the voltage. P - applying power, Pa – active
power, Pc – reactive power
0
5
10
15
20
25
30
0
1
2
3
4
5
6
Т=1.4ms
0
10
20
30
40
Т=0.8ms
P
ow
er
[
W
]
Р
Рс
Ра
0
2
4
6
8
O
zo
ne
c
on
ce
n
tr
at
io
n
[
m
g/
l]
С
0
20
40
60
80
100
Т=0.4ms
0
24
6
810
1214
4 6 8 10 12 14020
406080100120140 Т=0.2ms
Voltage [kV]
0
24
68
10
1214
0
2 0
4 0
6 0
8 0
1 0 0
1 2 0
Т = 1 .4 m s
P
o
w
er
[
W
]
Р
Р с
Р а
0
4
8
1 2
1 6
2 0
O
zo
n
e
co
n
ce
n
tr
at
io
n
[
m
g
/l
] С
0
2 5
5 0
7 5
1 0 0
1 2 5
1 5 0
Т = 0 .8 m s
0
3
6
9
1 2
1 5
4 6 8 1 0 1 2 1 40
5 0
1 0 0
1 5 0
2 0 0
2 5 0 T = 0 .4 m s
V o l t a g e [ k V ]
0
2
4
6
8
1 0
1 2
1 4
a b
Fig.5. Dependences of the ozone concentration and
discharge power for ozonizers with ((a) – glass,
(b)-glass enamel) insulating plates as a function applying
voltage. Air flow 3 l / min. T-repetition period of the
pulses of the voltage. P - applying power,
Pa – active power, Pc – reactive power
0
5
1 0
1 5
2 0
2 5
3 0
E
,
[
g
/
k
W
*
h
]
E
2 . 5
5
7 . 5
6 63 71 05310 . 50 . 2
Р
С
l / m i n
C
,[
g
/
m3
]
0
5 0
1 0 0
1 5 0
2 0 0
2 5 0
3 0 0
Y , [ g / h ]P , [ W ]
2 3
3 0
1 60
Y
0
1 0
2 0
3 0
4 0
E
,[
g
/
k
W
*
h
]
C
,[
g
/
m
3
]
C
6 0 0
4 5 0
0
3 5 0
1 5 0
P
0 .20 .5 1 3 5 1 0 3 7 6 6
Y
l /m in
E
4 0
3 0
2 0
1 0
0
P ,[W ]Y ,[g /h ]
2 0
3 0
4 0
5 0
6 0
Fig.6. Characteristics of ozone generation
215
a
b
(a -with glass dielectric, b -with glass enimel dielectric),
С –ozone concentration, l – air flow rate, P – applied
power, Y – yield rate, E – energy yield
A capacitor was used to regulate the voltage applied to
the metallic stripes. In so doing one may speculate that
the utilization of the preionization in the main discharge
provides 5 – 10% increase of ozone output concentration.
But reactors of such type are difficult to produce
technically due to problems connected with a heat sink.
CONCLUSIONS
Optimization parameters of the barrier discharge at
atmospheric pressure are scientific interest and due to
various applications. The barrier reactors of flat
electrodes with the use of two types of dielectrics and
pulsed power supply has been investigated. The main
characteristics of discharges were investigated with the
purpose to obtain the optimum ozone concentration and
its yielding rate dependent on the air flow rate and pulse
repetition period of the applied voltage. The electronic
original measuring scheme allowed selecting HF-signal of
the active current at any shape of the applied voltage to
the discharge gap, which made it possible to determine
possible to determine active power in the barrier
discharge.
The maximum concentration of ozone obtained 30 mg/l
with the flow rate 0.2 l/min and 7 mg/l with the flow rate
40 l/min using pure air flow. On the basis of the
conducted investigations is prepared the module of
industrial ozonizer with the power 500 W.
REFERENCES
1. V.S. Taran, O.M. Shvets, E.B. Babich. A selection of
applications of the HF- discharge for plama
technologies // Problems of Atomic Science and
Technology. Series: “Plasma physics” (3,4). 1999, N3,
4, p. 276-279.
2. V.V. Krasnyj, A.V. Klosovski, Yu.N. Nezovibatko,
D.P. Pogozhev, V.S. Taran, O.M. Svets, D.N. Utemov.
Design and investigation of HF ozonators // Problems
of Atomic Science and Technology. Series: “Plasma
physics” (5). 2000, p.144-146.
3. V.V. Krasnyj, S.P. Gubareb, V.D. Kotsubanov,
D.P.Pogozhev, V.S. Taran, V.I. Tereshin, O.M. Svets.
Investigation of plate–type barrier ozonizers with ac
and pulse power supples // Problems of Atomic Science
and Technology. Series:”Plasma physics” (8). 2002,
N5, p.144-146.
ИССЛЕДОВАНИЕ ХАРАКТЕРИСТИК ПЛОСКОГО БАРЬЕРНОГО ОЗОНАТОРА
С ИМПУЛЬСНЫМ ПИТАНИЕМ
В.В. Красный, А.В. Клосовский, А.С. Кныш, В.С. Таран, О.М. Швец
Проведены исследования характеристик озонатора на основе барьерного разряда с плоскими электродами и
импульсным питанием. Получены экспериментальные данные о соотношениях полной, активной и реактивной
мощностях в барьерном реакторе, а также выходной концентрации озона и производительности в зависимости
от скорости протока воздуха и частоты повторения высоковольтных импульсов питания.
ДОСЛІДЖЕННЯ ХАРАКТЕРИСТИК ПЛОСКОГО БАР'ЄРНОГО ОЗОНАТОРА
З ІМПУЛЬСНИМ ЖИВЛЕННЯМ
В.В. Красний, А.В. Клосовський, А.С. Книш, В.С. Таран, О.М. Швець
Проведено дослідження характеристик озонатора на основі бар'єрного розряду з плоскими електродами
й імпульсним живленням. Отримано експериментальні дані про співвідношення повної, активної і реактивної
потужностей у бар'єрному реакторі, а також вихідної концентрації озону і продуктивності в залежності від
швидкості течії повітря і частоти повторення високовольтних імпульсів живлення.
216
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